Finding the Fourth Proportional to 2,756.72, 3,805.56 and 1,872.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,756.72 : 3,805.56 = 1,872.56 : x
2. Step 2: Convert to fraction form
   2,756.72/3,805.56 = 1,872.56/x
3. Step 3: Cross multiply
   2,756.72x = 3,805.56 × 1,872.56
4. Step 4: Simplify right side
   2,756.72x = 7,126,139.43
5. Step 5: Solve for x
   x = 7,126,139.43/2,756.72
6. Step 6: Final answer
   x = 2,585.01